twoeightnine I've lead a trip slightly like this a few times. Been to almost every place you've mentioned. Depending on how much time you really want to spend exploring each Park and city you're really going to be pushing it if you try and and go everywhere on your list.
That part of the country is really, really large. Every passenger that I've had can't believe that it takes as long as it does to get everywhere. (But I can drive across the Netherlands in 2 hours! Why does it take me 2 hours to drive across Yosemite?) You're looking at 5 hours of driving each of your first two driving days alone without any side trips. Actually more with adding Overton since it's the opposite direction as the Grand Canyon. Probably 8 hours that day. Add in Route 66 and you're talking 9.
As for showers, many of the National Parks have pay showers. (Or if you're lucky you can sneak into one in one of the lodges.) Though if you're staying in private campgrounds you would have access to their showers anyways.
Travel Forum 5 years ago